<header class="oms-header">
  <nav class="oms-header-nav">
    <div class="nav-left">header works!</div>
    <div class="nav-right">
      <a href="javascript:;" (click)="onLogOut()"><i class="fas fa-sign-out-alt"></i>退出登录</a>
    </div>
  </nav>
</header>
